Please help on these practice problems. Provide a step by step I am confused. Thank you

Use the following information to answer Questions $1$ and $3.$

QUESTION $1)$

An investor is considering the two investments shown above. Which of the following statements about these investments is true?

A$.$ The investor should take investment A since it has a greater net present value $($NPV$).$

B$.$ The investor should take investment B since it has a greater net present value $($NPV$).$

C$.$ Both investments should be taken since they have a positive net present value $($NPV$).$

QUESTION $2$

What is the project B$\text{'}$s IRR?

A$.16\mathrm{.}00\%$

B$.15\mathrm{.}61\%$

C$.15\mathrm{.}24\%$

QUESTION $3$

What is the project A$\text{'}$s payback periods?

A$.3\mathrm{.}40$

B$.3\mathrm{.}60$

C$.3\mathrm{.}75$

QUESTION $4$

A$.10\mathrm{.}43\%$

B$.9\mathrm{.}75\%$

C$.9\mathrm{.}08\%$